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First version of pitch DNN C code

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Totally untested -- most likely doesn't work
This commit is contained in:
Jean-Marc Valin 2023-10-01 03:59:17 -04:00
parent 966a2d22eb
commit 33adba02c7
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GPG key ID: 531A52533318F00A
5 changed files with 97 additions and 3 deletions
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dnn/pitchdnn.c Normal file
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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h>
#include "pitchdnn.h"
#include "os_support.h"
#include "nnet.h"
#include "lpcnet_private.h"
int compute_pitchdnn(
PitchDNNState *st,
const float *if_features,
const float *xcorr_features
)
{
float if1_out[DENSE_IF_UPSAMPLER_1_OUT_SIZE];
float downsampler_in[NB_XCORR_FEATURES + DENSE_IF_UPSAMPLER_2_OUT_SIZE];
float downsampler_out[DENSE_DOWNSAMPLER_OUT_SIZE];
float conv1_tmp1[NB_XCORR_FEATURES + 2] = {0};
float conv1_tmp2[NB_XCORR_FEATURES + 2] = {0};
float output[DENSE_FINAL_UPSAMPLER_OUT_SIZE];
int i;
int pos=0;
float maxval=-1;
PitchDNN *model = &st->model;
/* IF */
compute_generic_dense(&model->dense_if_upsampler_1, if1_out, if_features, ACTIVATION_TANH);
compute_generic_dense(&model->dense_if_upsampler_2, &downsampler_in[NB_XCORR_FEATURES], if1_out, ACTIVATION_TANH);
/* xcorr*/
OPUS_COPY(&conv1_tmp1[1], xcorr_features, NB_XCORR_FEATURES);
compute_conv2d(&model->conv2d_1, &conv1_tmp2[1], st->xcorr_mem1, conv1_tmp1, NB_XCORR_FEATURES, ACTIVATION_TANH);
compute_conv2d(&model->conv2d_1, &conv1_tmp1[1], st->xcorr_mem2, conv1_tmp2, NB_XCORR_FEATURES, ACTIVATION_TANH);
compute_conv2d(&model->conv2d_1, downsampler_in, st->xcorr_mem3, conv1_tmp1, NB_XCORR_FEATURES, ACTIVATION_TANH);
compute_generic_dense(&model->dense_downsampler, downsampler_out, downsampler_in, ACTIVATION_TANH);
compute_generic_gru(&model->gru_1_input, &model->gru_1_recurrent, st->gru_state, downsampler_out);
compute_generic_dense(&model->dense_final_upsampler, output, st->gru_state, ACTIVATION_LINEAR);
for (i=0;i<DENSE_FINAL_UPSAMPLER_OUT_SIZE;i++) {
if (output[i] > maxval) {
pos = i;
maxval = output[i];
}
}
return (1.f/60.f)*pos - 1.5;
/*return 256.f/pow(2.f, (1.f/60.f)*i);*/
}
void pitchdnn_init(PitchDNNState *st)
{
int ret;
OPUS_CLEAR(st, 1);
ret = init_pitchdnn(&st->model, pitchdnn_arrays);
celt_assert(ret == 0);
/* FIXME: perform arch detection. */
}